"Len Wood" wrote in message
...
On Thursday, November 6, 2014 5:52:19 PM UTC, Scott W wrote:
On Thursday, 6 November 2014 09:16:16 UTC,
wrote:
Quite impressive. Below freezing widely in SE and Central Southern
England (eg -2 in Wokingham) but + 6.7 deg as I arrived at work on
Fleet Street just after 0800.

I'm 7.2 miles as the crow flies east from Fleet Street and it was -1.3C
before the temp began rising at 0658z. I ride in most days and it always
amazes me the difference in just a few miles.

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There's an awful lot of underground passages and sewers under the streets
of London.

These unquestionably contribute to the UHI.
May be accounting for 3 Degrees according to Will's weekday/weekend
figures.

A good PhD (Piled high and Deep) topic for some geographer if you ask me.

Len

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Are the sewers colder at the weekends Len ?
Altitude also has a factor with calm nights,I live just a couple of miles
from Scott,but around 250ft,so on calm clear nights my mins are several
degrees above the lower lying places around here like Wanstead.
Indeed when I lived in the middle of industrial Stratford during the '63
winter which was very built up and heated by many coal fires (no central
heating in those days !),I clocked a minimum of minus 13C on the morning of
January 23rd..
Yes my clogs were too cold to wear without wrapping my feet with newspaper
first.......

RonB